travis: Fail the UBSan Travis build in case of newly introduced UBSan errors #14673

1. 
   practicalswift commented at 9:26 pm on November 6, 2018: contributor

   Fail the UBSan Travis build in case of newly introduced UBSan (UndefinedBehaviorSanitizer) errors.

   Prior to this commit new UBSan errors were printed but didn’t fail the UBSan Travis build.

   Changes:

   • Travis: Add UBSan options: print_stacktrace + halt_on_error
   • Travis: Add UBSan suppressions needed to pass test suite
   • Travis: Add llvm-symbolizer directory to PATH. Needed to get symbolized stack traces from the sanitizers.

   halt_on_error should have been part of #14252 really :-)

2. Add UBSan options: print_stacktrace + halt_on_error fced6b5086
3. Add UBSan suppressions needed to pass test suite 5c292dafcd
4. Add llvm-symbolizer directory to PATH. Needed to get symbolized stack traces from the sanitizers. 4773fa8207
5. 
   MarcoFalke commented at 10:25 pm on November 6, 2018: member

   Tested ACK 4773fa820784592a9d4ffb43d09f0a49a7a4ad9d (Checked that fced6b5086a63d021b3c756c8a5f8df8d31c4bfa fails on travis and that 4773fa820784592a9d4ffb43d09f0a49a7a4ad9d prints more useful stacks)
6. MarcoFalke merged this on Nov 6, 2018
7. MarcoFalke closed this on Nov 6, 2018

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8. MarcoFalke referenced this in commit d864e45730 on Nov 6, 2018
9. MarcoFalke added the label Tests on Nov 6, 2018
10. MarcoFalke referenced this in commit 7027c67cac on Jul 2, 2020
11. practicalswift deleted the branch on Apr 10, 2021
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Contributors
practicalswift MarcoFalke

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